<template>
  <div class="login">
    <el-form
      ref="loginRef"
      :model="loginForm"
      :rules="rules"
      class="login-form"
    >
      <h3 class="title">Java1234 Vue3 后台管理系统</h3>

      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          size="large"
          placeholder="账号"
        >
          <template #prefix><svg-icon icon="user" /></template>
        </el-input>
      </el-form-item>

      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          size="large"
          placeholder="密码"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon="password" /></template>
        </el-input>
      </el-form-item>

      <el-checkbox
        v-model="loginForm.rememberMe"
        style="margin: 0px 0px 25px 0px"
        >记住密码</el-checkbox
      >
      <el-form-item style="width: 100%">
        <el-button
          size="large"
          type="primary"
          style="width: 100%"
          @click.prevent="handleLogin"
        >
          <span>登 录</span>
        </el-button>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span
        >Copyright © 2013-2022
        <a href="http://www.dq333" target="_blank">dq333</a>
        版权所有.</span
      >
    </div>
  </div>
</template>

<script setup>
import { reactive, ref } from "vue";
import requestUtil from "@/util/request";
import store from "@/store";
import qs from "qs";
import { ElMessage } from "element-plus";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/util/jsencrypt";
import { useRouter } from "vue-router";

let router = useRouter();
let loginRef = ref();

let loginForm = reactive({
  username: "",
  password: "",
  rememberMe: false,
});

const rules = reactive({
  username: [
    { required: true, message: "请输入账号", trigger: "blur" },
    { min: 3, max: 10, message: "账号的长度3-10", trigger: "blur" },
  ],
  password: [{ required: true, message: "请输入你的密码", trigger: "blur" }],
});

let handleLogin = () => {
  loginRef.value.validate(async (valid) => {
    if (valid) {
      // 验证通过 才能操作
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.rememberMe) {
        Cookies.set("username", loginForm.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.password), {
          expires: 30,
        });
        Cookies.set("rememberMe", loginForm.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      let result = await requestUtil.post("login?" + qs.stringify(loginForm));
      if (result.code == 20000) {
        const token = result.data.authorization;
        const menuList = result.data.menuList;
        const currentUser = result.data.currentUser;
        store.commit("SET_USER", currentUser);
        store.commit("SET_MENULIST", menuList);
        store.commit("SET_TOKEN", token);
        //没有跳转 我NM的
        router.replace("/");
      } else {
        ElMessage.error(result.message);
      }
    }
  });
};

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  //三目运算  密码只需要解密
  loginForm.username = username === undefined ? loginForm.username : username;

  loginForm.password =
    password === undefined ? loginForm.password : decrypt(password);

  loginForm.rememberMe = rememberMe === undefined ? false : Boolean(rememberMe);
}
getCookie();
</script>

<style lang="scss" scoped>
a {
  color: white;
}
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/iTab-6ovy9w.jfif");
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 40px;

    input {
      display: inline-block;
      height: 40px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 40px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
